Mitsubishi Air Conditioner Reviews – 2021 Guide

| Last Updated: July 27, 2021

Mitsubishi Electric opened its HVAC division in 1980 and has been expanding and developing new cutting-edge technologies ever since.

Now regarded as one of the leading companies in the industry, it offers a wide range of efficient air conditioners that are perfect for both homes and offices. 

However, with so many different models, choosing the right air conditioner is no piece of cake. To help you with your decision, this guide includes the reviews of some of the best models offered by Mitsubishi, the warranty offered by the company, and how it compares to the competition. Let’s get started!

How Does Mitsubishi Compare to the Competition?

Mitsubishi offers high-end products designed with innovative features that you just won’t find in other models. All units align with the ‘Mitsubishi Electric Quality’ standard and ensure efficiency, durability, and high comfort. The company stands out from its competition in several different areas, including:


Most Mitsubishi air conditioners have Energy Star certification. They consume less electricity compared to other low-efficiency products and help cut energy costs, making them extremely environment-friendly as well. 


Challenged to develop air conditioning systems that deliver outstanding performance in all the different climatic conditions found in Japan, Mitsubishi has developed incredibly sophisticated yet durable products and systems that can be used under virtually every natural climatic condition found on earth. 

Mitsubishi 24,000 BTU 1.5 TON 2 x 12,000 BTU

Mitsubishi is also one of the few companies that sell inverter heat pump replacements. These heat pumps use inverters to produce the heat needed to heat up the room effectively. Moreover, they flawlessly work at subzero temperatures, making the pump usable year-round in almost every climate.

Air Quality 

All Mitsubishi HVAC equipment is designed with two separate filters to provide cleaner air. This comprehensive and advanced filtering technology ensures enhanced air quality in your home, creating a safer and healthier environment.


All HVAC equipment is designed to ensure quiet operation. Indoor units feature low-speed fans that have a much quieter operation than the high-speed fans found in other models.

Comparison of the Best Mitsubishi Air Conditioners

Mitsubishi offers an extensive range of air conditioners to accommodate a variety of both cooling and installation needs. To help you decide between the different quality models available today, we’ve constructed a comparison table that will certainly make your decision clearer:

Model Number

Energy Efficiency (SEER) Refrigerant type Maximum CFM

Cost of unit only





































Review of the Best Mitsubishi Air Conditioners

With such an extensive range of models offered by Mitsubishi, choosing the right one can be an extremely technical and time-consuming decision. To help you find a unit that best suits your needs, here are detailed reviews of some of the best Mitsubishi air conditioners: 

Best Overall

Mitsubishi 24,000 BTU 20.5 SEER

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Why it Stands Out to Us

This model stands out to us for several different reasons. Firstly, its advanced filtration system is an innovative combination of an enzyme-based filter and a hybrid catechin deodorizing filter. Along with capturing the offending particles, this filter also breaks them down, purifying and cleaning the air as it’s cooled. Secondly, its Econo Cool mode slowly adjusts the cooling setpoints and swings the horizontal vanes, resulting in enhanced efficiency without any compromise on comfort. Lastly, its swing modes cycle through every position for maximum coverage. Once users activate the wide mode, the fan speed is increased beyond the current setting.

Bottom Line 

An inverter-driven ductless wall-mounted indoor unit, this model certainly deserves a place on our list of top picks. It’s perfect for all residential applications and operates efficiently and quietly to provide exceptional comfort in every room. Manufactured for use in multi-zone systems, its functional design cleans and conditions the air without disrupting your space. Moreover, its convenient mounting plate makes the installation process incredibly quick and easy. Ideal for year-round operation, it heats, cools, dehumidifies, and much more. All in all, it’s not just powerful but delivers an excellent performance as well.


Anti-allergy filter captures and breaks the offending particles 

Hot start technology delays fan operation to prevent cold drafts 

Incredibly efficient cooling operations that provide unparalleled comfort 

Auto mode chooses the best vane position according to the operating mode

Innovative coil design reduces the possibility of mold growth or any other property damage


Air blades do not move left and right 

Might produce some vibration noise if mounted on a wood wall

Best for the Money

Mitsubishi 12,000 BTU 23.1 SEER

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Why it Stands Out to Us 

Part of the Mr. Slim series, this unit provides an extremely efficient solution for cooling and heating while providing exceptional comfort for each individual zone in which they’re installed. Along with keeping you comfortable, this model has been designed keeping energy efficiency in mind. The wall-mounted air handlers determine the temperature of the return air, and adjust it automatically, significantly reducing the unit’s reliance on a thermostat. The inverter technology further rams the system up and down according to the set technology, ensuring the room maintains a steady temperature and does not experience any large temperature swings. 

Bottom Line 

Ideal for rooms that become too cold in the winter or too hot in the summer, this model is a superior alternative to conventional HVAC systems. The heating and cooling system focuses on individual living spaces and rooms, rather than the one-size-fits-all design found in most central systems. It is also flexible, energy-efficient, and easy to install. Offering a hassle-free operation and wall mount installation, this model is specifically designed for ductless spaces. It further boasts four operating modes, Energy Star-rated performance, included remote control, and adjustable fan speed. Featuring a 23.6 SEER, it provides excellent value for money.


Parts are backed by a 5-year warranty

Inverter technology keeps the room at a steady temperature 

Mounting plate ensures a quick and easy installation process

Advanced filtration system cleans the air while conditioning it at the same time 

Temperature of the coil stays below the dew point to remove any unwanted moisture 


Instructions are a bit difficult to follow

Best Mitsubishi Ductless Air Conditioner

Mitsubishi 27,000 BTU 20 SEER

Mitsubishi 27,000 Btu 20 Seer Dual Zone Ductless Mini Split - 12K-15K - Heat Pump System (AC and Heat)

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Why it Stands Out to Us

This ductless heat pump system uses small pipes to directly deliver cooled or heated refrigerant into air-handling units. Every room or living space has a air-handling unit, and every unit comes with a wireless temperature controller. In simpler words, this system quietly delivers hot or cool air wherever it is required in the room. It’s further designed with a complex multi-part filtration system that reduces contaminants like viruses, bacteria, and allergens from the air, producing a healthier breathing environment. Moreover, its I-see sensor scans the room using infrared technology and makes adjustments according to the human heat signatures. By automatically adjusting the airflow and temperature, this system eliminates hot and cold spots and maintains consistent comfort.

Bottom Line

This ductless split system consists of a heat pump or an outdoor condenser, and one or more indoor units that condition and distribute air through your home. It provides heating and cooling with the ease of a wireless remote control, but more importantly turns off when you leave, allowing you to save money on electricity bills. With no costly changes to your business or home central heating and cooling systems, it can be used for the most difficult to heat or cool areas as well. Lastly, its advanced technology makes it an incredibly cost-effective alternative to both central ducted air conditioning systems and oil or gas-fired units for heat.


Handheld smart controllers enable users to control every room individually 

Enhanced filtration systems use washable filters that have a life of 10 years

Individualized comfort control for up to 8 rooms that are connected to a single outdoor unit 

I-see sensor detects cold or hot spots and adjusts the airflow and temperature accordingly for consistent comfort 

Powerful Mode function runs the system at a lower-higher temperature to quickly bring the room to the optimum comfort level


Small critters might get into control boards and short them out

Best Mitsubishi Mini Split Air Conditioner

Mitsubishi 15,000 BTU 21.6 SEER

Mitsubishi 15,000 Btu 21.6 Seer Single Zone Ductless Mini Split Heat Pump System (AC and Heat)

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Why it Stands Out to Us

Completely packed with features, this unit is the perfect solution for all your home and business needs. Manufactured with washable filters that have a life of 10 years, it helps save money and greatly reduce environmental impact. Advanced Multi-Stage filtration further captures and removes contaminants that spread illness, trigger asthma and allergy symptoms, and negatively impact air quality. It also allows users to control each zone in their home independently, and turn off zones that are not being used. Another great feature of this system is that it measures the return air in each room and adjusts it automatically, rather than using the conditions measured by the thermostat situated in a different room.

Bottom Line 

For more than 50 years, Mitsubishi has been the pioneer in the mini split industry because of its dedication to developing user-friendly, efficient comfort solutions. Designed for houses without any existing renovations or ductwork, this Energy Star-rated system boasts a cooling power of 12,000 BTUs that makes single rooms incredibly comfortable. Moreover, a built-in heat pump has 18,000 BTUs of heating power, enabling year-round use. All in all, its functional design is combined with quiet operations to provide comfort without disturbing you or disrupting your space. With multiple fan speeds, multiple airflow directions, and multiple operating modes, this unit is undoubtedly the best Mitsubishi mini split air conditioner.


Dry mode removes unwanted moisture and enhances comfort

Swing modes cycle through every position to provide maximum coverage 

Hybrid catechin deodorizing filter captures and breaks down all offending particles 

Inverter technology maximizes energy efficiency while keeping costs at a minimum

Vibration dampeners and insulated compressor compartment ensure an extremely quiet operation


Installation cost is a bit high

Remote does not have a light 

Best Mitsubishi Wall Mounted Air Conditioner

Mitsubishi MZ-FH15NA

Mitsubishi MZ-FH15NA - 15,000 BTU 22 SEER Hyper Heat Wall Mount Ductless Mini Split Air Conditioner Heat Pump 208-230V

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Why it Stands Out to Us

The features of this system are what truly make it stand out from its competition. Designed with H2i technology, it operates efficiently in low temperatures as well. It has a 100% heating capacity at 5-degrees Fahrenheit and is capable of providing heating in conditions as low as -13-degrees Fahrenheit. Moreover, its Smart Set function enables users to save a heating and cooling profile that consists of fan speed, airflow direction, and temperature. This profile can be easily activated using the Smart Set button on the controller. Lastly, hot-start technology provides warm air from startup, while the I-see Sensor aligns the air conditioning according to the number of people around the room so that air flows around them.

Bottom Line

This system is perfect for cooling and heating residential rooms and spaces, like home offices, basements, kiosks, bedrooms, dining rooms, guardhouses, living rooms, bonus rooms, and more. Quiet by design, it directly delivers cooled air to the room it’s situated in, without the use of any noisy fans. It further allows users to remotely adjust their settings so that every room has the perfect temperature when you return. All in all, this unit is undoubtedly the best Mitsubishi wall mounted air conditioner and certainly deserves a place on our list of top picks. 


Washable hybrid Catechin pre-filter eliminates odors and captures dust 

Front panel access of indoor unit makes filter cleaning an extremely easy task 

Auto changeover automatically switches between heating and cooling as required 

Slim design with an incredibly quiet and efficient operation to provide users with consistently warm or cool air 

Comes with a wireless, RFI-RedLINK controller, allowing users to control the unit from a smartphone, tablet, or remote PC


Heat cannot be set below 61 degrees

Best Overall

Mitsubishi 24,000 BTU 1.5 TON 2 x 12000 BTU

Mitsubishi 24,000 BTU 1.5 TON 2 x 12,000 BTU One Way Ceiling Cassette Dual Zone System - SEER 20 AC & Heat Pump Ductless Ceiling Recessed Cool & Heat Energy Star

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Why it Stands Out to Us

Compact and slim, this unit is designed with a wide airflow pattern, ensuring better air distribution in a much less obtrusive style. This model boasts an outdoor condenser with inverter technology, which makes precise adjustments of refrigerant flow and compressor speed, resulting in improved system efficiency and temperature accuracy. It also features an advanced thermal sensor that determines the occupancy and the hot and cold spots of the room. It then uses this data to direct airflow to specific areas of the zone in different situations. Moreover, the included remote controller kits have multiple scheduling options and dual setpoint controls. They determine how quickly different zones are heated and cooled and adjust scheduled operations accordingly, ensuring the right temperature every time!

Bottom Line

This two-zone system is designed to give users total control over the temperature in different rooms. A low-profile SLZ-KF ceiling cassette and 2 wireless remote controls are combined with a highly efficient outdoor condenser for the perfect combination of comfort and convenience. With multiple fan speeds, multiple airflow directions, and multiple operating modes, this system meets the needs and requirements of virtually every home. Whether you’re supplementing an existing cooling and heating system or designing a completely new one, this model is undoubtedly an excellent addition.


Hot start technology stalls fan operation to prevent cold drafts

Multiple fan speeds and operating modes make it incredibly versatile 

Comes with a five-year parts warranty and a seven-year warranty on compressors

Internal drain mechanism prevents condensate overflow and simplifies installation

Inverter technology and electronic linear expansion valve improve temperature accuracy 


Some people received a defective unit

What Kind of Warranty Does Mitsubishi Offer?

All packaged air conditioners, regardless of registration, are backed by a 7-year compressor warranty and a 5-year warranty on parts that can only be used by the original owner of the unit. Once buyers register their unit, they’ll become eligible for an extended warranty service. While Mitsubishi offers an extended warranty, it’s important to remember that all labor costs must be paid by the consumer. 

If buyers register their unit online within ninety days of installation, they’ll receive a 10-year compressor and parts warranty. Furthermore, if consumers have their system registered and installed by a Ductless Pro or a Diamond Contractor within 90 days of installation, they’ll become eligible for a 12-year compressor and parts warranty.

Who is Mitsubishi?

First founded in 1870 by Yataro Iwasaki, the Mitsubishi Group has now grown into a group of several independent companies that are active in almost every sector of the industry. Mitsubishi Electric was founded in 1921 and has retained its reputation for creating groundbreaking new technologies that have truly revolutionized business fields around the world. The company also made history by developing the ‘brain’ of the KOUNOTORI – an unmanned supply vehicle that docked with the ISS. It also released the first car navigation system that incorporated GPS and completed the Subaru telescope that’s now situated in the summit of Mauna Kea, Hawaii.


Mitsubishi is undoubtedly a reliable company and one that has developed some of the best air conditioners available today. However, an air conditioner is a big investment, and it’s essential that you make the right choice. Hopefully, this guide will have made your decision a bit easier. 

My name is Bob Wells and I am a retired HVAC tech from Washington state. I am currently retired and no longer do much with HVAC, however, I feel like I have a lot of knowledge in the subject and I wanted to create a website where I could talk about what I've learned and help upcoming HVAC techs. Find more info about me and HVAC Training 101.